JP4762848B2 - Liquid container - Google Patents

Description

  The present invention relates to a container in which sheets of flexible synthetic resin are stacked, and in particular, a liquid (including a semi-fluid) is contained inside and can be stably supplied to the outside. Concerning the container.

  2. Description of the Related Art Conventionally, as a container for storing a liquid, a sheet made of a synthetic resin (plastic film) is overlapped and welded (thermally welded). Such a liquid container is used in various fields such as food, daily necessities such as cosmetics and sanitary goods, office supplies, and medical fields. Further, in such a liquid container, a spout integrally formed with a synthetic resin is integrally heat-welded to the synthetic resin sheet, and the liquid contained inside through the spout Some are also known.

  For example, Patent Document 1 discloses a liquid storage bag used for medical purposes. This liquid storage bag has a structure in which a liquid outlet is formed below and the liquid stored therein is discharged by gravity.

  For example, Patent Document 2 discloses a so-called refillable flexible container that contains a container used in the daily necessities field, mainly a liquid detergent or the like. As is well known, the internal liquid is taken out from the flexible container by forming a spout by breaking a predetermined position and pressing the side of the container with the spout facing downward. Done in In addition, as described above, such a container is also known to have a structure in which spout is welded (thermally welded). By attaching such a spout, liquid inside can be easily poured. It is possible to produce an action and effect that it is excellent in handleability.

As described above, the liquid container in which the sheets made of synthetic resin are stacked and welded is used in various fields because it can be manufactured at a low cost. It is done by gravity and hand pressing force with the side facing down.
JP-A-11-285518 JP 2003-160150 A

  The liquid container described above is used solely as a refill bottle, as is widely known in the daily necessities field, but has recently been housed in the liquid container in various fields. A use mode in which liquid is taken out and set in a device (external device) that supplies the liquid to a predetermined location is considered. And in such an external device, when the liquid stored in the liquid container is used up, a new liquid container can be set at a predetermined position, or is stored in another part. The liquid may be configured to be reinjected into the liquid container.

  However, in such an external device, there is a possibility that the liquid container having the conventional structure described above cannot be used as it is. That is, if the liquid container cannot be directed downward due to the basic configuration of the external device (for example, installation space restrictions), it may not be possible to stably dispense (supply) the liquid. There is sex.

  Therefore, in a state where the spout is directed to the side or upward, a device (a device having a pump function, a pressing member, etc.) for stably taking out the liquid in the liquid container is provided on the external device side. The necessity to install arises, and as a result, the problem that the cost of an external apparatus becomes high and usability worsens arises.

  The present invention has been made paying attention to the above-described problem, and an object of the present invention is to provide a liquid container that can stably pour out the stored matter regardless of the posture change.

  In order to achieve the above-described object, a liquid container according to the present invention is formed by stacking and welding flexible synthetic resin sheets, a main body capable of storing liquid, and the liquid in the main body attached to the main body. And a pair of plate-like members that are attached so as to face the main body and are provided with urging means so as to apply pressure to the liquid. And

  According to the configuration described above, when the liquid is accommodated in the main body in which the flexible synthetic resin sheets are stacked and welded, the pair of plate-like members attached facing the main body are brought into close contact with each other by the biasing means. The state is biased in the direction. As a result, a pressing force that can be forced out through the spout acts on the liquid in the main body. Therefore, regardless of the direction of the spout (change in the posture of the main body), it is possible to discharge the liquid from the spout in a stable state.

  According to the present invention, it is possible to obtain a liquid container that can stably pour out the contents regardless of the posture change.

Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings.
1 to 4 show a first embodiment of a liquid container according to the present invention. FIG. 1 is a perspective view showing the overall configuration, FIG. 2 is a plan view, and FIG. 3 is A in FIG. FIG. 4 is a cross-sectional view taken along the line -A, and FIG.

  The liquid container 1 according to the present embodiment is configured, for example, in the form shown in FIG. That is, the liquid container 1 is formed by superimposing synthetic resin sheets (plastic film) 3a formed in a substantially rectangular shape having flexibility, and heat-welding the periphery thereof with a heat bar or the like (the welded portion is hatched) And a main body 3 configured in a bag shape. A liquid (which may be a semi-fluid) is accommodated inside the main body 3, and the accommodation amount (the size of the sheet 3a) is set according to the use or the like. As shown in the figure, when the periphery of the sheet 3a is heat-welded, side sheets serving as the side walls 3d may be heat-welded on both sides, thereby increasing the amount of accommodation. .

  A spout 5 for pouring liquid is integrally attached to the heat welding region around the main body 3. The spout 5 is integrally formed of a synthetic resin such as plastic, and when the sheet 3a is heat-welded, the spout 5 is disposed between the sheets 3a and sandwiched between the sheets. For this reason, the spout 5 is integrally formed with a welded portion 5a having a substantially circular (elliptical) cross section so that the sheet 3a is thermally welded.

  Moreover, in this embodiment, the inlet 7 of the same structure is attached to the edge part on the side facing the spout 5 in order to fill the liquid into the main body. A welding portion 7 a having a substantially circular (elliptical) cross section is integrally formed at the injection port 7, and is thermally welded between the sheets 3 a like the spout 5. In the usage mode in which the liquid is stored in the main body 3 in advance, the inlet 7 may be not attached.

  Plate members 9 having the same shape are attached to the inner surface of the sheet 3a constituting the main body 3, respectively. The plate-like member 9 is integrally formed of metal, plastic or the like, and has a shape that is attached over substantially the entire inner surface of the sheet 3a. In this case, the shape of the pair of plate-like members 9 is not particularly limited, and may be configured in different shapes.

  The pair of plate-like members 9 are provided with urging means for urging the pair of plate-like members 9 in a direction in which they are in close contact with each other. The urging means of the present embodiment is configured by forming protrusions 9a integrally with the end portions of the plate-like member 9, and stretching a tension spring 10 between the protrusions 9a. That is, the plate member 9 attached to the inner surface of the sheet 3a in this way is urged in a direction in which the plate member 9 is attracted to each other by the tension spring 10, so that the liquid contained in the main body 3 is indicated by the arrow in FIG. As shown, a pressing force that can be forced out through the spout 5 acts.

  Therefore, by opening the spout 5 from the closed state, the liquid accommodated therein can flow out of the spout 5 by the pulling force of the plate-like members 9. As a result, the liquid can be poured out from the spout 5 in a stable state regardless of the direction of the spout 5 (the posture change of the main body 3). And as shown in FIG. 3, when a pair of plate-shaped member closely_contact | adheres with the urging | biasing force which acts on the plate-shaped member 9, all the liquid of the main body 3 will be in the state poured out.

  In the configuration described above, it is preferable to provide a control means 12 for controlling the amount of liquid dispensed at the spout 5. The control means 12 can be constituted by, for example, a nozzle that gradually decreases the diameter of the opening of the spout 5. According to such a nozzle, as shown in FIG. 4, the liquid is stored in the main body 3 in advance, and by opening the spout 5 at the time of use, the liquid is little by little while maintaining a constant flow rate. It is possible to dispense. In this case, the flow rate can be appropriately adjusted according to the biasing force of the tension spring 10, the shape of the plate-like member 9, the diameter of the spout 5, and the like.

  Moreover, the control means 12 can be comprised by the pressure valve provided in the spout 5, for example. Such a pressure valve has a structure that opens when the pressure in the main body 3 exceeds a predetermined value. For example, as shown in FIG. 4, the main body 3 is filled with liquid via the inlet 7. Along with this, the pair of plate-like members 9 are separated from each other and released when the force (force for pushing out the liquid) attracted by the urging spring 10 exceeds a predetermined value.

  Such a liquid container has a structure suitable for a usage mode in which the liquid is refilled from the inlet 7 in a state where the liquid in the main body 3 is empty. That is, regardless of the posture of the liquid container 1, it is possible to realize a function as a pump that can stably supply liquid to another location at a constant flow rate. For this reason, it is preferable to provide a check valve 13 in the above-described injection port 7 so as to open only in a direction in which the liquid can be filled in the main body 3 (not to flow backward from the main body 3).

  The structure of the above-described pressure valve and check valve is generally known, and detailed description thereof is omitted here. Further, the above-described control means 12 may be provided in a liquid flow path on the external device side (not shown), and in such a configuration, the spout 5 is simply configured by an opening through which liquid flows out. The

  Next, another embodiment of the present invention will be described. In the embodiments described below, portions different from the above-described embodiments will be described, and portions having the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.

  5 to 7 show a second embodiment of the liquid container according to the present invention. FIG. 5 is a plan view, FIG. 6 is a cross-sectional view taken along line BB in FIG. FIG. 7 is a cross-sectional view showing a state in which the liquid is accommodated therein.

  In this embodiment, the pair of plate-like members 9A that are attached in the main body 3 and apply pressure to the liquid are made of a shape memory alloy. As shown in FIG. 5, the plate-like member 9A is formed in a substantially rectangular shape, and as shown in FIG. 6, the shape is memorized so that the periphery thereof is separated from each other, and is attached to the inner surface of the sheet 3a. Has been.

  And in such a structure, when a liquid is accommodated in the main body 3, as shown in FIG. At this time, the plate-like member 9A cannot return to the original shape shown in FIG. 6 because the spout 5 is closed. A force for returning to the original shape shown in FIG. 6 can be exerted, and a pressing force that flows out from the spout 5 acts on the liquid in the main body 3.

  According to such a configuration, it is only necessary to attach a plate-like member (formed of a shape memory alloy) to the inside of the sheet 3a constituting the main body 3, so that the structure can be simplified, Cost can be reduced. Of course, even in such a configuration, the tension spring 10 as shown in the first embodiment may be provided.

  8 to 10 show a third embodiment of the liquid container according to the present invention. FIG. 8 is a plan view, FIG. 9 is a cross-sectional view taken along the line CC in FIG. FIG. 10 is a cross-sectional view showing a state in which the liquid is accommodated therein.

  This embodiment has a configuration in which a pair of plate-like members that are attached to the main body 3 in the first embodiment and apply pressure to the liquid are attached to the outer surface of the sheet 3 a of the main body 3. ing. In this case, the plate-like member 9B attached to each outer surface of the facing sheet 3a is formed with a protruding portion 9a ′ protruding from the edge of the sheet 3a, and the protruding spring 9a ′ has a tension spring 10a. Is stretched.

  In such a configuration, as in the first embodiment described above, when a liquid is accommodated in the main body 3, as shown in FIG. 10, each plate-like member 9 resists the urging force of the tension spring 10 by liquid pressure. However, although the spout 5 is closed, the two cannot be brought into close contact with each other. Then, as described above, by opening the spout 5, the plate-like members 9 are urged in the direction in close contact with each other as shown in FIG. It starts to flow out of 5.

  According to such a configuration, the plate-like member 9B that applies pressure does not come into contact with the liquid contained in the main body 3, and thus malfunctions due to the type of liquid, contact with the plate-like member or the tension spring. It is possible to prevent a change in the composition of the liquid due to this. Moreover, since it is the structure which attaches the plate-shaped member 9B and the tension | pulling spring 10 to the exterior of the sheet | seat 3a, manufacture becomes easy and it becomes possible to reduce cost.

  11 to 13 show a fourth embodiment of the liquid container according to the present invention. FIG. 11 is a plan view, FIG. 12 is a cross-sectional view taken along the line DD in FIG. FIG. 13 is a cross-sectional view showing a state in which a liquid is contained inside.

  In this embodiment, a pair of plate-like members (shape memory alloy 9C) that are attached to the main body 3 in the second embodiment and apply pressure to the liquid are attached to the outer surface of the sheet 3a of the main body 3. It has an attached structure.

  In such a configuration, as in the above-described second embodiment, when the liquid is accommodated in the main body 3, each plate-like member 9 </ b> C is formed into a flat plate shape by the hydraulic pressure in the main body 3 as shown in FIG. 13. Although it changes, it cannot return to the original shape shown in FIG. 12 because the spout 5 is closed. Then, by opening the spout 5, each plate-like member 9 </ b> C can exert a force to return to the original shape shown in FIG. 12, and the liquid in the main body 3 flows out from the spout 5. Such a pressing force will act.

  According to such a configuration, as in the third embodiment, the plate-like member 9C that applies pressure does not come into contact with the liquid stored in the main body 3, and thus malfunctions due to the type of liquid, It is possible to prevent a change in the composition of the liquid due to contact with the plate member. Further, since it is only necessary to attach a plate-like member (formed of a shape memory alloy) to the outside of the sheet 3a constituting the main body 3, the structure can be simplified and the cost can be reduced. It becomes possible.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the shape of the main body of the liquid container can be various shapes and sizes. In particular, since the structure is simple, it is possible to obtain a pump (liquid supply device) that is inexpensive and reduced in size and weight. Further, the shape of the plate-like member that applies pressure to the liquid, the configuration of the urging means, and the attachment position can be modified as appropriate. Furthermore, the position where the spout is attached and the configuration thereof can be modified as appropriate.

The perspective view which shows 1st Embodiment of the liquid container which concerns on this invention, and shows the whole structure. The top view of a liquid container. Sectional drawing along the AA line of FIG. Sectional drawing which showed the state which accommodated the liquid inside. The top view which shows 2nd Embodiment of the liquid container which concerns on this invention. Sectional drawing along the BB line of FIG. Sectional drawing which showed the state which accommodated the liquid inside. The top view which shows 3rd Embodiment of the liquid container which concerns on this invention. Sectional drawing along CC line of FIG. Sectional drawing which showed the state which accommodated the liquid inside. The top view which shows 4th Embodiment of the liquid container which concerns on this invention. Sectional drawing along the DD line | wire of FIG. Sectional drawing which showed the state which accommodated the liquid inside.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid container 3 Main body 3a Sheet 5 Outlet 7 Inlet 9, 9A, 9B, 9C Plate member 10 Tension spring 12 Control means 13 Check valve

Claims (5)

A flexible synthetic resin sheet is stacked and welded, and a main body that can hold liquid,
A spout attached to the main body and allowing the liquid in the main body to be discharged;
A pair of plate-like members attached so as to face the main body and provided with urging means so as to apply pressure to the liquid;
I have a,
It said pair of plate members, the liquid container characterized that you have been attached to the inner surface of the body. Said biasing means includes a tension spring which is stretched between the pair of plate-like members, the tensile force of the tension spring to claim 1, characterized that you apply pressure to the liquid The liquid container as described. Said biasing means is constituted by said pair of plate-like member and the shape memory alloy, the liquid accommodation of claim 1, wherein that you apply pressure to the liquid by the shape change body. The liquid container according to any one of claims 1 to 3, wherein a control means for controlling the amount of liquid dispensed is provided at the spout . The liquid container according to any one of claims 1 to 4 , wherein an inlet that allows the liquid to be filled in the main body is attached to the main body.

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